CN104297058B - A kind of fretting fatigue testing test specimen clamping and charger - Google Patents
A kind of fretting fatigue testing test specimen clamping and charger Download PDFInfo
- Publication number
- CN104297058B CN104297058B CN201410590091.9A CN201410590091A CN104297058B CN 104297058 B CN104297058 B CN 104297058B CN 201410590091 A CN201410590091 A CN 201410590091A CN 104297058 B CN104297058 B CN 104297058B
- Authority
- CN
- China
- Prior art keywords
- loading
- foot bridge
- bolt
- test specimen
- bracing frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of fretting fatigue testing test specimen clamping and charger, loading fixture and bracing frame two parts including side's foot bridge, side's foot bridge loads fixture and is made up of side's foot bridge loading frame, loading force regulation bolt, side foot bridge mounting seat, elastic ring, force transducer etc.；Supporting frame part is made up of bracing frame crossbeam, bracing frame longeron, column clamping plate and pressing plate etc.；Fix tension and compression test specimen and column clamping plate during use, side's foot bridge is loaded fixture and is placed on bracing frame longeron, rotate the thrust of the loading force regulation bolt side of regulating foot bridge, then with pressing plate, side's foot bridge mounting seat is pressed on bracing frame longeron；The invention provides thrust measurable and controllable on tension and compression test specimen, the tension and compression test specimen both sides imbalance thrust utilizing the free state loading time side foot bridge to eliminate due to fixture manufacture and alignment error the to produce impact on test specimen, reduce the thrust distribution error on test specimen, improve experimental precision.
Description
Technical field
The invention belongs to a kind of fatigue experimental device, relate to a kind of test specimen clamping being attached on fretting fatigue testing machine and thrust charger, specifically a kind of fretting fatigue testing test specimen clamping and charger.
Background technology
Fretting fatigue is present in the every field of social life, is the one of the main reasons of the key position inefficacy of bolt connection frame for movement.Between bolted two Assembly part faying faces, by the transient mechanical load of the multi-form such as tensile, compressive, bending, torsion during owing to working, part produces small rigid body displacement and deformation, and therefore the part of faying face contact also exists fine motion, and long term can cause part failure.At present, during carrying out fretting fatigue testing, due to fixture mismachining tolerance and the existence of rigging error, it is difficult to ensure that the centering of test specimen seal face requires and the coherence request of test specimen both sides thrust.For the feature of plane-plane contact between side's foot bridge and tension and compression test specimen, require that side's foot end face malleation of two side's foot bridge test specimens is in the plane of tension and compression test specimen, and thrust is equal in magnitude, and existing fine motion fixture can not ensure these requirements well, it is easily caused test specimen and produces moment of flexure and thrust skewness on test specimen, affect accuracy and the concordance of test data.
Summary of the invention
For solving the problems referred to above, the invention provides a kind of fretting fatigue testing test specimen clamping and charger, on the basis of original fretting fatigue testing machine, use the present invention can realize the automatic centering of the side's of loading foot bridge, effectively solve the incomplete problem of plane-plane contact；The present invention can realize two side foot bridges load tension and compression test specimen simultaneously, and ensure that the equal in magnitude of both sides loading force, improves accuracy and the reliability of test to a great extent；The present invention has only to a force transducer just can realize loading demand, greatly reduces manufacturing cost.
The present invention be the technical scheme is that a kind of fretting fatigue testing test specimen clamping and charger to achieve these goals, loads fixture and bracing frame including side's foot bridge；Support frame as described above includes bracing frame crossbeam, bracing frame longeron and column clamping plate, the bracing frame crossbeam of support frame as described above and bracing frame longeron are connected by bracing frame longeron trip bolt, and positioned by conical dowel pin, column clamping plate and bracing frame longeron are combined to form circular hole, it is attached by bracing frame fastening bolt so that it is can be fixed on the column of fretting fatigue testing machine；Described side's foot bridge loads the fixture side of including foot bridge loading frame, force transducer, elastic ring, loading bolt, side's foot bridge, side's foot bridge mounting seat and loading force regulation bolt, described side's foot bridge loading frame is rectangular frame, force transducer is by the side of the force transducer fastening bolt side of being connected to foot bridge loading frame, elastic ring is connected with force transducer by elastic ring trip bolt, loading bolt is connected on elastic ring, two side's foot bridges are installed bolt by four side's foot bridges and are separately fixed in two side's foot bridge mounting seats, side's foot bridge mounting seat is placed on bracing frame crossbeam, and fixed by pressing plate and bridge screw, move with the above-below direction position of restriction side's foot bridge mounting seat, described loading force regulation bolt is threaded connection the opposite side of the side's of being arranged on foot bridge loading frame；Described force transducer, elastic ring, loading bolt, two side's foot bridge mounting seats, two side's foot bridges and loading force regulation bolt word order in side's foot bridge loading frame, when tightening loading force regulation bolt, side's foot bridge produces thrust in opposite direction equal in magnitude.
Described loading bolt is spherical structure with the head of loading force regulation bolt, there is hemispheric pit at the bolt pressure position of described side's foot bridge mounting seat, when tightening loading bolt, the other side's foot bridge seal face in side's foot bridge mounting seat can automatically with tension and compression test specimen two side plane keeping parallelism, it is ensured that the sufficient bridge plane in side and the surface-to-surface Full connected of test specimen.
Described side's foot bridge loads fixture can be freely movable before fixing with pressing plate, loading bolt is connected for fixing with elastic ring, when rotating loading force regulation bolt, owing to its bridge loading frame sufficient with side is for threadeding, relation due to active force Yu counteracting force, sensor, elastic ring and loading bolt move to tension and compression test specimen with loading frame, thus ensure that the loading force size of tension and compression test specimen both sides is identical.
The invention has the beneficial effects as follows: be surface-to-surface contact between side's foot bridge and the tension and compression test specimen of the present invention, effectively simulate the fine motion state between two bolt connection piece planes；The thrust that can realize being added in tension and compression test specimen both sides by the present invention is equal in magnitude, eliminates the moment of flexure impact on result of the test；The present invention only just can realize required thrust measurement function with a force transducer, reduces experimentation cost；Side's foot bridge loads the ball-joint of the fixture free state when applying thrust and loading bolt head and designs concordance and the uniformity that ensure that two side foot bridge thrusts, reduces assembly difficulty.Comparing with traditional fretting fatigue testing piece fixture, the tension and compression test specimen thrust of the present invention applies and adjusts more convenient, and the accuracy of power is easier to ensure that.
Accompanying drawing explanation
Fig. 1 is the structural representation before the present invention does not installs pressing plate.
Fig. 2 is the structural representation of supporting frame part.
Fig. 3 is the structural representation that in the present invention, side's foot bridge loads holder part.
Fig. 4 is the overall structure schematic diagram of the present invention.
In figure: 1, side's foot bridge loads fixture, 2, bracing frame, 3, pressing plate, 4, tension and compression test specimen, 5, bridge screw, 6, loading force regulation bolt, 7, bolt installed by side's foot bridge, 8, side's foot bridge mounting seat, 9, side's foot bridge, 10, loading bolt, 11, elastic ring, 12, elastic ring trip bolt, 13, force transducer, 14, force transducer fastening bolt, 15, bracing frame fastening bolt, 16, column clamping plate, 17, bracing frame longeron, 18, bracing frame crossbeam, 19, follower bolt hole, 20, bracing frame longeron trip bolt, 21, conical dowel pin, 22, side's foot bridge loading frame.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings:
A kind of fretting fatigue testing test specimen clamping and charger, as it is shown in figure 1, the side's of including foot bridge loads fixture 1 and bracing frame 2；Wherein bracing frame 2 is as shown in Figure 2, including bracing frame crossbeam 18, bracing frame longeron 17 and column clamping plate 16, bracing frame crossbeam 18 and bracing frame longeron 17 are connected by bracing frame longeron trip bolt 20, and positioned by conical dowel pin 21, column clamping plate 16 and bracing frame longeron 17 are combined to form circular hole, it is attached by bracing frame fastening bolt 15 so that it is can be fixed on the column of fretting fatigue testing machine；Side's foot bridge loads fixture 1 as shown in Figure 3, including side's foot bridge loading frame 22, force transducer 13, elastic ring 11, loading bolt 10, side's foot bridge 9, side's foot bridge mounting seat 8 and loading force regulation bolt 6, side's foot bridge loading frame 22 is rectangular frame, force transducer 13 is by the side of force transducer fastening bolt 14 side of being connected to foot bridge loading frame 22, elastic ring 11 is connected with force transducer 13 by elastic ring trip bolt 12, loading bolt 10 is connected on elastic ring 11, two side's foot bridges 9 are installed bolt 7 by four side's foot bridges and are separately fixed in two side's foot bridge mounting seats 8, side's foot bridge mounting seat 8 is placed on the bracing frame crossbeam 18 of bracing frame 2, and fixed by pressing plate 3 as shown in Figure 4 and bridge screw 5, move with the above-below direction position of restriction side's foot bridge mounting seat 8；Loading force regulation bolt 6 is threaded connection the opposite side of the side's of being arranged on foot bridge loading frame 22；Described force transducer 13, elastic ring 11, loading bolt 10, two side foot bridge mounting seat 8, two side's foot bridge 9 and loading force regulation bolt 6 word order in side's foot bridge loading frame 22, when tightening loading force regulation bolt 6, side's foot bridge 9 produces thrust in opposite direction equal in magnitude.
Loading bolt 10 is spherical structure with the head of loading force regulation bolt 6, there is hemispheric pit at foot bridge mounting seat bolt 7 position that presses, side of side's foot bridge mounting seat 8, when tightening loading bolt 10, the other side's foot bridge 9 seal face in side's foot bridge mounting seat 8 can automatically with tension and compression test specimen two side plane keeping parallelism, it is ensured that the sufficient bridge plane in side and the surface-to-surface Full connected of test specimen；Foot bridge mounting seat 8 both sides, side are ball-joint with the fit structure of bolt, can be pressed on tension and compression surface of test piece uniformly for guarantor's foot bridge plane, it is achieved the uniformity of surface of test piece thrust.
Side's foot bridge loads fixture 1 can be freely movable before fixing with pressing plate 3, loading bolt 10 is connected for fixing with elastic ring 11, when rotating loading force regulation bolt 6, owing to its bridge loading frame 22 sufficient with side is for threadeding, relation due to active force Yu counteracting force, force transducer 13, elastic ring 11 and loading bolt 10 move to tension and compression test specimen 4 with side's foot bridge loading frame 22, thus ensure that the loading force size of tension and compression test specimen 4 both sides is identical.
The present invention first has to assemble bracing frame 2 when mounted, by involutory to bracing frame longeron 17 and column clamping plate 16, intermediate formation circular hole, connect by bracing frame fastening bolt 15, it is positioned by bracing frame longeron 17 and bracing frame crossbeam 18 by conical dowel pin 21, and link together with bracing frame longeron trip bolt 20, bracing frame 2 is carried out leveling, and moves to it fasten on suitable height on the column of fatigue machine；Next foot bridge in assembling side's loads fixture 1, force transducer 13 is by force transducer fastening bolt 14 side of being fixed on foot bridge loading frame 22, elastic ring 11 and force transducer 13 are fixed together by elastic ring trip bolt 12, loading bolt 10 is fixed on elastic ring, side's foot bridge mounting seat 8 and side's foot bridge 9 are installed bolt 7 by side's foot bridge and are connected, on loading force regulation bolt 6 side of being threadedly attached in foot bridge loading frame 1, in the ball-and-socket of the end bulb side of the withstanding on foot bridge mounting seat of loading bolt 10 and loading force regulation bolt 6.
When the present invention works, first the side's foot bridge assembled is loaded fixture 1 to be placed on bracing frame crossbeam 18, tension and compression test specimen 4 is fixed on the piece-holder head of fatigue machine through two side's foot bridges 9, then rotate loading force regulation bolt 6 combining ability sensor 13 and regulate the size of loading force, due to active force and counteracting force, loading bolt 10 also promote on the left of side's foot bridge press to test specimen, it is achieved test specimen both sides thrust equal in magnitude.After thrust size meets the requirements, pressing plate 3 is fixed on bracing frame crossbeam 18 by bridge screw 5, owing to side's foot bridge mounting seat 8 suppose that foot bridge loading frame 22 is high, it is possible to guarantor's foot bridge mounting seat 8 can not move up and down.Piece-holder head work time move up and down, tension and compression test specimen 4 be stretched with compression and extend and shorten, side foot bridge 9 position immovable, tension and compression test specimen 4 and side foot bridge 9 seal face between generation oligodynamics.
The foregoing is only a specific embodiment of the present invention, but the architectural feature of the present invention is not limited thereto, any those skilled in the art is in the field of the invention, and change or the modification made all are contained among the scope of the claims of the present invention.
Claims (3)
1. a fretting fatigue testing test specimen clamping and charger, including bracing frame, bracing frame includes bracing frame crossbeam, bracing frame longeron and column clamping plate, the bracing frame crossbeam of support frame as described above and bracing frame longeron are connected by bracing frame longeron trip bolt, and positioned by conical dowel pin, column clamping plate and bracing frame longeron are combined to form circular hole, are attached by bracing frame fastening bolt so that it is can be fixed on the column of fretting fatigue testing machine；It is characterized in that: the also side's of including foot bridge loads fixture, described side's foot bridge loads the fixture side of including foot bridge loading frame, force transducer, elastic ring, loading bolt, side's foot bridge, side's foot bridge mounting seat and loading force regulation bolt, described side's foot bridge loading frame is rectangular frame, force transducer is by the side of the force transducer fastening bolt side of being connected to foot bridge loading frame, elastic ring is connected with force transducer by elastic ring trip bolt, loading bolt is connected on elastic ring, two side's foot bridges are installed bolt by four side's foot bridges and are separately fixed in two side's foot bridge mounting seats, side's foot bridge mounting seat is placed on bracing frame crossbeam, and fixed by pressing plate and bridge screw, move with the above-below direction position of restriction side's foot bridge mounting seat, described loading force regulation bolt is threaded connection the opposite side of the side's of being arranged on foot bridge loading frame；Described force transducer, elastic ring, loading bolt, two side's foot bridge mounting seats, two side's foot bridges and loading force regulation bolt word order in side's foot bridge loading frame, when tightening loading force regulation bolt, side's foot bridge produces thrust in opposite direction equal in magnitude.
A kind of fretting fatigue testing test specimen clamping the most according to claim 1 and charger, it is characterized in that: described loading bolt is spherical structure with the head of loading force regulation bolt, there is hemispheric pit at the bolt pressure position of described side's foot bridge mounting seat, when tightening loading bolt, the other side's foot bridge seal face in side's foot bridge mounting seat can automatically with tension and compression test specimen two side plane keeping parallelism, it is ensured that the sufficient bridge plane in side and the surface-to-surface Full connected of test specimen.
A kind of fretting fatigue testing test specimen clamping the most according to claim 1 and charger, it is characterized in that: described side's foot bridge loads fixture can be freely movable before fixing with pressing plate, loading bolt is connected for fixing with elastic ring, when rotating loading force regulation bolt, owing to its bridge loading frame sufficient with side is for threadeding, relation due to active force Yu counteracting force, sensor, elastic ring and loading bolt move to tension and compression test specimen with loading frame, thus ensure that the loading force size of tension and compression test specimen both sides is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590091.9A CN104297058B (en) | 2014-10-29 | 2014-10-29 | A kind of fretting fatigue testing test specimen clamping and charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590091.9A CN104297058B (en) | 2014-10-29 | 2014-10-29 | A kind of fretting fatigue testing test specimen clamping and charger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104297058A CN104297058A (en) | 2015-01-21 |
| CN104297058B true CN104297058B (en) | 2016-10-05 |
Family
ID=52316885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410590091.9A Expired - Fee Related CN104297058B (en) | 2014-10-29 | 2014-10-29 | A kind of fretting fatigue testing test specimen clamping and charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104297058B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259059B (en) * | 2015-11-23 | 2017-08-11 | 江苏大学 | Laser peening reinforcing improves the contrast test method and sample clamping device of material fretting fatigue resistance energy |
| CN105675412A (en) * | 2016-01-14 | 2016-06-15 | 西南交通大学 | Bending fretting fatigue experimental equipment and experimental method |
| CN106680068B (en) * | 2016-11-30 | 2023-07-14 | 岭东核电有限公司 | Constant normal force loading device and loading method in fretting fatigue test |
| CN106969974A (en) * | 2017-03-22 | 2017-07-21 | 安徽正钧信息科技有限公司 | A kind of grip device of test mechanical performance |
| CN109100219B (en) * | 2018-05-31 | 2021-04-27 | 西北工业大学 | Fretting fatigue test device and method |
| CN110132739B (en) * | 2019-05-24 | 2020-12-29 | 北京航空航天大学 | Micro fatigue test normal load loading device and method |
| CN110702502A (en) * | 2019-10-17 | 2020-01-17 | 浙江理工大学 | Composite material plate pre-compression clamping method |
| CN112985987B (en) * | 2021-02-08 | 2022-04-29 | 清华大学 | Multidirectional static force loading device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201622210U (en) * | 2010-03-16 | 2010-11-03 | 陈跃良 | Adjustable fretting fatigue tester |
| CN102087186A (en) * | 2011-01-26 | 2011-06-08 | 复旦大学 | Fretting fatigue test platform |
| CN102359870A (en) * | 2011-08-31 | 2012-02-22 | 桂林福达股份有限公司 | Diaphragm spring fatigue test tooling |
| CN102901678A (en) * | 2011-07-28 | 2013-01-30 | 福建浔兴拉链科技股份有限公司 | Detection apparatus for fatigue strength of zipper |
| CN202886185U (en) * | 2012-09-21 | 2013-04-17 | 苏州热工研究院有限公司 | Clamping device for pipe-plate line contact fretting wear test |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014115162A (en) * | 2012-12-07 | 2014-06-26 | Mitsubishi Heavy Ind Ltd | Fretting fatigue testing device |
-
2014
- 2014-10-29 CN CN201410590091.9A patent/CN104297058B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201622210U (en) * | 2010-03-16 | 2010-11-03 | 陈跃良 | Adjustable fretting fatigue tester |
| CN102087186A (en) * | 2011-01-26 | 2011-06-08 | 复旦大学 | Fretting fatigue test platform |
| CN102901678A (en) * | 2011-07-28 | 2013-01-30 | 福建浔兴拉链科技股份有限公司 | Detection apparatus for fatigue strength of zipper |
| CN102359870A (en) * | 2011-08-31 | 2012-02-22 | 桂林福达股份有限公司 | Diaphragm spring fatigue test tooling |
| CN202886185U (en) * | 2012-09-21 | 2013-04-17 | 苏州热工研究院有限公司 | Clamping device for pipe-plate line contact fretting wear test |
Non-Patent Citations (1)
| Title |
|---|
| 微动疲劳损伤试验设计研究;欧阳祖行 等;《航空学报》;19920731;第13卷(第7期);第A457-A461页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104297058A (en) | 2015-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104297058B (en) | A kind of fretting fatigue testing test specimen clamping and charger | |
| US8857265B2 (en) | System and method for aligning a test article with a load | |
| CN104677745B (en) | A kind of concrete lever tension and compression creep equipment with quiet pulley | |
| CN110132739B (en) | Micro fatigue test normal load loading device and method | |
| CN103616128B (en) | Six-dimension force sensor calibration device and loading unit thereof | |
| CN204128895U (en) | The constant compressive stress charger of concrete | |
| CN106297529B (en) | A kind of double-station servo mechanism load simulator | |
| CN104236906B (en) | A kind of tail-rotor spring bearing radial rigidity test device | |
| CN113138071B (en) | Test device for applying bidirectional compression load | |
| CN202271551U (en) | Connecting structure for connecting piston and sliding block of hydraulic machine | |
| CN104191394B (en) | The anti-bending fixture of a kind of single-ride joint | |
| CN111650063A (en) | Normal load loading device based on single-shaft fatigue testing machine | |
| CN204789130U (en) | Multi -functional of hard and soft conversion can invariable load support | |
| CN104215445A (en) | Stiffened wall plate compression testing device | |
| CN109357931A (en) | A kind of more testpieces high temperature resistant fatigue testing clamping devices | |
| CN104458257A (en) | Bearing reaction simulating device for rotating shaft | |
| CN108621104B (en) | Major diameter flange face meets floating support device | |
| CN111157355A (en) | Shell test device used in high-temperature axial compression composite loading environment | |
| CN109211703B (en) | Fretting friction wear test device | |
| CN104007032B (en) | The standard hardness machine of 2 high-precision force sensors of a kind of employing | |
| CN110220786A (en) | A kind of controllable load normal direction loading device of steady type | |
| CN105510118A (en) | Micro-motion loading device for symmetrical line contact micro-motion fatigue test | |
| CN201917492U (en) | Displacement transfer device used for clamping extensometer | |
| CN110686989A (en) | Material symmetrical loading three-point bending fatigue experimental device | |
| CN204789190U (en) | Convenient servo dynamic fatigue test device of electric liquid is loaded and unloaded and adjusted |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161005 Termination date: 20171029 |